sunflower with its flower head or pseudanthium, its ray flowers and the center of its head or disk flowers

agriculture annuus background beautiful bloom blooming blossom botany bright circle closeup colorful concept copy environment field flora floral florets flower fresh garden gardening green growth head helianthus horticulture inflorescence light natural nature outdoor outside pattern petal plant pollen ray season shape space spring summer sun sunflower sunlight sunny texture vibrant white yellow